<!--
{
  "availability" : [
    "iOS: 13.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "AppKit",
  "identifier" : "/documentation/AppKit/NSToolbar/runCustomizationPalette(_:)",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "AppKit"
    ],
    "preciseIdentifier" : "c:objc(cs)NSToolbar(im)runCustomizationPalette:"
  },
  "title" : "runCustomizationPalette(_:)"
}
-->

# runCustomizationPalette(_:)

Displays the toolbar’s customization palette and handles any user-initiated customizations.

```
func runCustomizationPalette(_ sender: Any?)
```

## Parameters

`sender`

The control sending the message.

## Discussion

While the customization palette is visible, the toolbar calls methods of its delegate to manage configuration changes.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)